﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Transactions;
using System.Web.Mvc;
using System.Web.Security;
using BankApp.Models;
using CommonApp;
using IBS.Bll;
using IBS.Model;
using IBS.ServiceContracts;
using Model;

namespace BankApp.Controllers
{
    [HandleError]
    public class AdmissionController : Controller
    {
        private IKnowledgeBaseService knowledgeBaseService;
        private IAuthorityService authorityService;

        public AdmissionController()
        {
            var container = new IbsContainer();
            knowledgeBaseService = container.KnowledgeBaseService;
            this.authorityService = container.AuthorityService;
        }

        public ActionResult LogOn()
        {
            if (User.Identity.IsAuthenticated)
            {
                return RedirectToAction("Index", "Home");
            }
            return View();
        }

        //
        // POST: /Account/LogOn

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                if (Membership.ValidateUser(model.UserName, model.Password))
                {
                    if (Roles.GetRolesForUser(model.UserName).All(r => !r.Equals("user")))
                    {
                        FormsAuthentication.SetAuthCookie(model.UserName, model.RememberMe);
                        if (Url.IsLocalUrl(returnUrl) && returnUrl.Length > 1 && returnUrl.StartsWith("/")
                            && !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))
                        {
                            return Redirect(returnUrl);
                        }
                        else
                        {
                            return RedirectToAction("Index", "Home");
                        }
                    }
                }
                else
                {
                    ModelState.AddModelError("", "The user name or password provided is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/LogOff

        public ActionResult LogOff()
        {
            FormsAuthentication.SignOut();
            TempData.AddNotification("You have logged off. See you next time!", "success");

            return RedirectToAction("Index", "Home");
        }

        //
        // GET: /Account/Register
        [Authorize(Roles = "Admin")]
        public ActionResult Register()
        {
            var allUsers = new List<UserAccount>();
            var memberShipUsers = Membership.GetAllUsers();

            foreach (MembershipUser user in memberShipUsers)
            {
                
                {
                    allUsers.Add(new UserAccount()
                                     {
                                         Login = user.UserName,
                                         Email = user.Email,
                                         Role = String.Join(",", Roles.GetRolesForUser(user.UserName))
                                     });
                }
            }
            return View(allUsers);
        }


        [Authorize(Roles = "Admin")]
        [HttpPost]
        public ActionResult Register(string role)
        {
            var allUsers = new List<UserAccount>();
            var memberShipUsers = Membership.GetAllUsers();

            foreach (MembershipUser user in memberShipUsers)
            {
                if (role == null || Roles.IsUserInRole(user.UserName, role))
                {
                    allUsers.Add(new UserAccount()
                    {
                        Login = user.UserName,
                        Email = user.Email,
                        Role = String.Join(",", Roles.GetRolesForUser(user.UserName))
                    });
                }
            }
            return PartialView("_UsersAccountGrid", allUsers);
        }

        [Authorize(Roles = "Admin")]
        public ActionResult RegisterAdmin()
        {
            return View(new RegisterModel());
        }

        //
        // POST: /Account/Register

        [HttpPost]
        [Authorize(Roles = "Admin")]
        public ActionResult RegisterAdmin(RegisterModel model)
        {
            try
            {
                var codeCard = authorityService.GetUnmatchedCodeCards().FirstOrDefault();
                if (codeCard == null)
                {
                    ModelState.AddModelError("", "There's no available code cards");
                    return View(model);
                }
                authorityService.CreateAdmin(model.UserName, codeCard, model.Password, model.Email);
            }
            catch (BusinessException ex)
            {
                ModelState.AddModelError("", ex.Message);
                return View(model);
            }
            return RedirectToAction("Register");
        }

        [Authorize(Roles = "Admin")]
        public ActionResult RegisterOperator()
        {
            return View(new RegisterModel());
        }

        [HttpPost]
        [Authorize(Roles = "Admin")]
        public ActionResult RegisterOperator(RegisterModel model)
        {
            try
            {
                var codeCard = authorityService.GetUnmatchedCodeCards().FirstOrDefault();
                if (codeCard == null)
                {
                    ModelState.AddModelError("", "There's no available code cards");
                    return View(model);
                }
                authorityService.CreateOperator(model.UserName, codeCard, model.Password, model.Email);
            }
            catch (BusinessException ex)
            {
                ModelState.AddModelError("", ex.Message);
                return View(model);
            }
            return RedirectToAction("Register");
        }

        //
        // GET: /Account/ChangePassword

        [Authorize]
        [Authorize(Roles = "Admin")]
        public ActionResult ChangePassword()
        {
            return View();
        }


        //
        // POST: /Account/ChangePassword

        [Authorize]
        [HttpPost]
        [Authorize(Roles = "Admin")]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {

                // ChangePassword will throw an exception rather
                // than return false in certain failure scenarios.
                bool changePasswordSucceeded;
                try
                {
                    MembershipUser currentUser = Membership.GetUser(User.Identity.Name, true /* userIsOnline */);
                    changePasswordSucceeded = currentUser.ChangePassword(model.OldPassword, model.NewPassword);
                }
                catch (Exception)
                {
                    changePasswordSucceeded = false;
                }

                if (changePasswordSucceeded)
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        //
        // GET: /Account/ChangePasswordSuccess
        [Authorize(Roles = "Admin")]
        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }

        #region Status Codes
        private static string ErrorCodeToString(MembershipCreateStatus createStatus)
        {
            // See http://go.microsoft.com/fwlink/?LinkID=177550 for
            // a full list of status codes.
            switch (createStatus)
            {
                case MembershipCreateStatus.DuplicateUserName:
                    return "User name already exists. Please enter a different user name.";

                case MembershipCreateStatus.DuplicateEmail:
                    return "A user name for that e-mail address already exists. Please enter a different e-mail address.";

                case MembershipCreateStatus.InvalidPassword:
                    return "The password provided is invalid. Please enter a valid password value.";

                case MembershipCreateStatus.InvalidEmail:
                    return "The e-mail address provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidAnswer:
                    return "The password retrieval answer provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidQuestion:
                    return "The password retrieval question provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.InvalidUserName:
                    return "The user name provided is invalid. Please check the value and try again.";

                case MembershipCreateStatus.ProviderError:
                    return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                case MembershipCreateStatus.UserRejected:
                    return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

                default:
                    return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
            }
        }
        #endregion
    }
}
